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Username Post: Engaging 4WD 93 suburban/Auto        (Topic#359465)
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-13-20 02:16 PM - Post#2784344    

When I yank on the transfer case lever, the light indicator lights up in a few seconds and I have 4WD. I just did that, light went on, then it went off in half a mile. No 4WD.

What does the sequence consist of when I put it in 4WD? I know there is a nitrogen cartridge I believe, on the front axle.

Before I get to looking, tell me where to look and save me some precious time, please.



 
rockfangd 
"6th Year" Gold Supporting Member
Posts: 2854
rockfangd
Age: 33
Loc: Utica ny
Reg: 04-13-10
01-13-20 06:40 PM - Post#2784360    
    In response to opus

The thermal actuator on the front diff is the first suspicion.
Especially since you said it failed after engaging.
If it has not been replaced it should be upgraded with the electronic version

Old School GM fan FOREVER


Edited by rockfangd on 01-13-20 06:42 PM. Reason for edit: No reason given.

 
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-13-20 06:44 PM - Post#2784361    
    In response to rockfangd

Never been replaced.
Hmmm...electronic version? With all the gravel roads I am on, I'd need some convincing.

Never knew there was an electronic version.



 
tcndeb 
Senior Member
Posts: 425

Loc: Texas
Reg: 04-18-04
01-14-20 09:27 AM - Post#2784380    
    In response to opus

I switched mine to the manual cable version, and it works very well.

'92 Full Size Blazer


 
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-14-20 09:53 AM - Post#2784381    
    In response to tcndeb

  • tcndeb Said:
I switched mine to the manual cable version, and it works very well.



Oooo...tell me more.




 
CowboyTrukr 
"8th Year" Silver Supporting Member
Posts: 4331
CowboyTrukr
Loc: Salt Lake City
Reg: 06-20-09
01-14-20 02:49 PM - Post#2784394    
    In response to opus

@bowtie44s

Jeff, you did the cable style, too, right? Lokar?


Greg

'95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500
'00 Explorer XLT 4.0 V6 Auto
'94 K2500 5.7 NV4500 ECLB - SOLD
‘87 GMC S15 SCLB 4.3 Auto - SOLD

"The only thing necessary for evil to triumph is for good men to do nothing" Sir Edmund Burke


 
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-14-20 05:13 PM - Post#2784403    
    In response to CowboyTrukr

I went with the motorized version.

Thanks for the input.



 
rockfangd 
"6th Year" Gold Supporting Member
Posts: 2854
rockfangd
Age: 33
Loc: Utica ny
Reg: 04-13-10
01-14-20 06:48 PM - Post#2784405    
    In response to opus

The electric one is great. No issues there.
There is a cable option, alot more work to do though for more work to use.
If you upgrade to the electric you will likely forget about any issues.
And it does not have the delay of the thermal ones.
Gravel roads wont matter. They cannot be any worse that NY roads

Old School GM fan FOREVER


 
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-14-20 08:15 PM - Post#2784406    
    In response to rockfangd

Good to know. I like manual but the price and work for the cable one....nah.



 
rockfangd 
"6th Year" Gold Supporting Member
Posts: 2854
rockfangd
Age: 33
Loc: Utica ny
Reg: 04-13-10
01-14-20 08:29 PM - Post#2784407    
    In response to opus

The only benefit I really see is the ability to have 2lo if you did a manual setup.
Can be done with the actuator as well though with not too much work

Old School GM fan FOREVER


 
bowtie44s 
Valued Contributor
Posts: 4258
bowtie44s
Age: 37
Loc: wv
Reg: 08-29-12
01-14-20 09:03 PM - Post#2784409    
    In response to CowboyTrukr

I did the 4x4 posi-lok and hid the red button in the ash tray. I put one in my brother's 95 and it's easier to tuck under the dash out of sight with the new interior.

Jeff

'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap


 
bowtie44s 
Valued Contributor
Posts: 4258
bowtie44s
Age: 37
Loc: wv
Reg: 08-29-12
01-14-20 09:06 PM - Post#2784410    
    In response to rockfangd

The 2 low is nice. The biggest thing is the thermal actuator takes a long time to heat up when it's cold and it WILL fail. It's just a matter of time. It usually decides to fail when you need it most.

The electric ones seem to be more dependable, but I like having 2 low when I'm backing a trailer in a tight spot with my manual transmission.

Jeff

'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap


Edited by bowtie44s on 01-14-20 09:11 PM. Reason for edit: No reason given.

 
opus 
Member
Posts: 267
opus
Loc: Montana
Reg: 10-20-04
01-14-20 09:41 PM - Post#2784411    
    In response to bowtie44s

Its the wifes rig so I'm not worried about 2 low. Sure enough be easy to do though, just put a switch on the power feed.





 
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